Secondary aluminum melting process

A recycled aluminum and process technology, which is applied in the direction of improving process efficiency, can solve the problems such as poor processing effect of recycled aluminum, and achieve the effects of improving mechanical properties and corrosion resistance, enhancing mechanical strength, and reducing deformation

Inactive Publication Date: 2018-04-03
赵露曦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a secondary aluminum smelting process for the problem of poor effect of the secondary aluminum treatment process in the prior art, which has good impurity removal and purification effects during the smelting process, and the resulting finished product has a good effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Use cleaning solution to clean new and recycled materials; break waste cans into 1cm-long strips of aluminum, and then pass through a wind separator for the first separation under the condition of a wind speed of 4m / s to separate light Impurities. Then, through a magnetic separator, the second separation is carried out under the condition of a magnetic field strength of 0.1T, and the iron filings are separated. Next, put the aluminum strip into 15% acetic acid solution for immersion for 3 minutes, then heat the aluminum strip to 80° C. and perform mechanical kneading.

[0041] Add the rubbed aluminum strip while hot to the first mixture of benzyl alcohol, acetic acid and turpentine with a volume ratio of 3:1:1 and stir for 15 minutes, then put in the second mixture of 4:1 absolute ethanol and ethyl acetate. The mixture was stirred for 10 minutes, ultrasonically oscillated in deionized water for 30 minutes, and then dried at 110°C for 20 minutes.

[0042] Then batching i...

Embodiment 2

[0050] Use cleaning solution to clean new and recycled materials; break waste cans into 1cm-long strips of aluminum, and then pass through a wind separator for the first separation under the condition of a wind speed of 4m / s to separate light Impurities. Then, through a magnetic separator, the second separation is carried out under the condition of a magnetic field strength of 0.1T, and the iron filings are separated. Next, put the aluminum strip into 15% acetic acid solution for immersion for 3 minutes, then heat the aluminum strip to 80° C. and perform mechanical kneading.

[0051] Add the rubbed aluminum strip while hot to the first mixture of benzyl alcohol, acetic acid and turpentine with a volume ratio of 3:1:1 and stir for 15 minutes, then put in the second mixture of 4:1 absolute ethanol and ethyl acetate. The mixture was stirred for 10 minutes, ultrasonically oscillated in deionized water for 30 minutes, and then dried at 110°C for 20 minutes.

[0052] Then batching...

Embodiment 3

[0057] Use cleaning solution to clean new and recycled materials; break waste cans into 1cm-long strips of aluminum, and then pass through a wind separator for the first separation under the condition of a wind speed of 4m / s to separate light Impurities. Then, through a magnetic separator, the second separation is carried out under the condition of a magnetic field strength of 0.1T, and the iron filings are separated. Next, put the aluminum strip into 15% acetic acid solution for immersion for 3 minutes, then heat the aluminum strip to 80° C. and perform mechanical kneading.

[0058] Add the rubbed aluminum strip while hot to the first mixture of benzyl alcohol, acetic acid and turpentine with a volume ratio of 3:1:1 and stir for 15 minutes, then put in the second mixture of 4:1 absolute ethanol and ethyl acetate. The mixture was stirred for 10 minutes, ultrasonically oscillated in deionized water for 30 minutes, and then dried at 110°C for 20 minutes.

[0059] Then carry ou...

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PUM

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Abstract

The invention discloses a secondary aluminum melting process, and belongs to the technical field of the secondary aluminum treatment. In the melting progress, the effects of removing impurities and purifying are good, and the effect of finished products is good. The secondary aluminum melting process is applied to the preparation of aluminum alloy of an automotive body. The secondary aluminum melting process is characterized by comprising the following steps that (a) fresh materials and reclaimed materials are cleaned up by cleaning fluid; (b) pretreated aluminum strips and industrial pure aluminum ingots are melted into molten aluminum under the condition of 700 DEG C-750 DEG C; (c) the surface of the molten aluminum is subjected to slagging-off, and precipitated impurities on the bottomof the molten aluminum are taken out; (d) liquated molten aluminum, strong solid acid, industrial pure silicon, industrial pure copper, industrial pure iron, and rare-earth metal are added into a smelting furnace, nano-carbonate is added into the smelting furnace, meanwhile, nitrogen of saturated Si(CH3)3Cl is led into the bottom of the smelting furnace, the temperature is increased up to 1700 DEGC-1800 DEG C until complete melting, the condition is held for 1-2 hours, and alloy liquid is obtained after filtering through a foamed ceramic filter plate; and (e) the surface of the alloy is covered with pure nitrogen with the pressure being 0.02-0.1 Mpa. The secondary aluminum melting process is used for smelting secondary aluminum.

Description

technical field [0001] The invention belongs to the technical field of secondary aluminum treatment, and in particular relates to a secondary aluminum smelting process. Background technique [0002] Aluminum alloy is a general term for alloys based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc or manganese, and the secondary alloying elements are nickel, iron, titanium, chromium or lithium. Aluminum alloy has good processability, especially hypoeutectic silicon-aluminum alloy, which not only has good processability, but also has light specific gravity, beautiful surface and corrosion resistance, good casting performance, and good comprehensive mechanical properties of products, which can be used to make various forms of parts. Widely used in many fields. As the main material of auto parts, aluminum alloy is widely used in the manufacture of doors, windows and invisible parts in the body structure at home and abroad. [0003] With the rapid de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B9/16C22B21/00
CPCC22B7/003C22B9/16C22B21/0069Y02P10/20
Inventor 赵露曦
Owner 赵露曦
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